Thu Dec 12, F.Flechtner
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Forootan, Ehsan, Farzaneh, Saeed, Kosary, Mona, Borries, Claudia, Kodikara, Timothy, and Schumacher, Maike, 2023. Predicting global thermospheric neutral density during periods with high geomagnetic activity. Scientific Reports, 13:20322, doi:10.1038/s41598-023-47440-x.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2023NatSR..1320322F,
author = {{Forootan}, Ehsan and {Farzaneh}, Saeed and {Kosary}, Mona and {Borries}, Claudia and {Kodikara}, Timothy and {Schumacher}, Maike},
title = "{Predicting global thermospheric neutral density during periods with high geomagnetic activity}",
journal = {Scientific Reports},
year = 2023,
month = nov,
volume = {13},
eid = {20322},
pages = {20322},
abstract = "{Estimating global and multi-level Thermosphere Neutral Density (TND) is
important for studying coupling processes within the upper
atmosphere, and for applications like orbit prediction. Models
are applied for predicting TND changes, however, their
performance can be improved by accounting for the simplicity of
model structure and the sampling limitations of model inputs. In
this study, a simultaneous Calibration and Data Assimilation
(C/DA) algorithm is applied to integrate freely available CHAMP,
GRACE, and Swarm derived TND measurements into the NRLMSISE-00
model. The improved model, called `C/DA-NRLMSISE-00', and its
outputs fit to these measured TNDs, are used to produce global
TND fields at arbitrary altitudes (with the same vertical
coverage as the NRLMSISE-00). Seven periods, between 2003-2020
that are associated with relatively high geomagnetic activity
selected to investigate these fields, within which available
models represent difficulties to provide reasonable TND
estimates. Independent validations are performed with along-
track TNDs that were not used within the C/DA framework, as well
as with the outputs of other models such as the Jacchia-Bowman
2008 and the High Accuracy Satellite Drag Model. The numerical
results indicate an average 52\%, 50\%, 56\%, 25\%, 47\%, 54\%,
and 63\% improvement in the Root Mean Squared Errors of the
short term TND forecasts of C/DA-NRLMSISE00 compared to the
along-track TND estimates of GRACE (2003, altitude 490 km),
GRACE (2004, altitude 486 km), CHAMP (2008, altitude 343 km),
GOCE (2010, altitude 270 km), Swarm-B (2015, altitude 520 km),
Swarm-B (2017, altitude 514 km), and Swarm-B (2020, altitude 512
km), respectively.}",
doi = {10.1038/s41598-023-47440-x},
adsurl = {https://ui.adsabs.harvard.edu/abs/2023NatSR..1320322F},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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